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Ask him if he found that sequencer inside the side discharge panel(back panel). If so he reset teh high limit, which will trip if you shut the disconnect off during a heat call with teh burner running.

Ask him if he found that sequencer inside the side discharge panel(back panel). If so he reset teh high limit, which will trip if you shut the disconnect off during a heat call with teh burner running.

You talking about the 3 wire limit correct?

Officially, Down for the count

YOU HAVE TO GET OFF YOUR ASS TO GET ON YOUR FEET

I know enough to know, I don't know enoughLiberalism-Ideas so good they mandate them

I reread the post. Sounds like the initial problem is/was the crossover tube and/or clogged pilot orifice and/or spiders nest. This is why he had to light with a torch. Does this unit have the blue Johnson Controls ignition modules? Those are designed to have multiple voltage inputs for them to fire. Even though you have 24v at TH, if any limits are open the inducer will run but you will not get spark.

Officially, Down for the count

YOU HAVE TO GET OFF YOUR ASS TO GET ON YOUR FEET

I know enough to know, I don't know enoughLiberalism-Ideas so good they mandate them

I reread the post. Sounds like the initial problem is/was the crossover tube and/or clogged pilot orifice and/or spiders nest. This is why he had to light with a torch. Does this unit have the blue Johnson Controls ignition modules? Those are designed to have multiple voltage inputs for them to fire. Even though you have 24v at TH, if any limits are open the inducer will run but you will not get spark.

He said they were grey boxes which means they were replaced. I think those are UEI boxes?

That's funny this guy is from P&amp;J and said he learned everything he knows from you. All kidding aside, I just wanted to get the kid some other thoughts on the issue since I knew I would probably not have time to go down and check out his issue. But he figured it out and learned a little from it.